Siemens RUGGEDCOM ROS User Manual

RUGGEDCOM ROS
User Guide
Chapter 5
Setup and Configuration
Managing Multiple Spanning Tree Instances 159
Parameter Description
• Learning - The port is learning MAC addresses in order to prevent flooding when it
begins forwarding traffic.
• Forwarding - The port is forwarding traffic.
Role Synopsis: { , Root, Designated, Alternate, Backup, Master }
Role of this port in Spanning Tree. This may be one of the following:
• Designated - The port is designated for (i.e. carries traffic towards the root for) the LAN it
is connected to.
• Root - The single port on the bridge, which provides connectivity towards the root bridge.
• Backup - The port is attached to a LAN that is serviced by another port on the bridge. It is
not used but is standing by.
• Alternate - The port is attached to a bridge that provides connectivity to the root bridge. It
is not used but is standing by.
• Master - Only exists in MSTP. The port is an MST region boundary port and the single
port on the bridge, which provides connectivity for the Multiple Spanning Tree Instance
towards the Common Spanning Tree root bridge (i.e. this port is the root port for the
Common Spanning Tree Instance).
Cost Synopsis: 0 to 4294967295
Cost offered by this port. If the Bridge RSTP Parameters Cost Style is set to STP, 1Gbps
ports will contribute 4, 100 Mbps ports will contribute 19 and 10 Mbps ports contribute a cost
of 100. If the Cost Style is set to RSTP, 1Gbps will contribute 20,000, 100 Mbps ports will
contribute a cost of 200,000 and 10 Mbps ports contribute a cost of 2,000,000. Note that
even if the Cost style is set to RSTP, a port that migrates to STP will have its cost limited to
a maximum of 65535.
RX RSTs Synopsis: 0 to 4294967295
The count of RSTP configuration messages received on this port.
TX RSTs Synopsis: 0 to 4294967295
The count of RSTP configuration messages transmitted on this port.
RX Configs Synopsis: 0 to 4294967295
The count of STP configuration messages received on this port.
TX Configs Synopsis: 0 to 4294967295
The count of STP configuration messages transmitted on this port.
RX Tcns Synopsis: 0 to 4294967295
The count of STP topology change notification messages received on this port. Excessively
high or rapidly increasing counts signal network problems.
TX Tcns Synopsis: 0 to 4294967295
The count of STP topology change notification messages transmitted on this port.
Desig Bridge ID Synopsis: $$ / ##-##-##-##-##-## where $$ is 0 to 65535, ## is 0 to FF
Provided on the root ports of designated bridges, the Bridge Identifier of the bridge this port
is connected to.
operEdge Synopsis: True or False
The port is operating as an edge port or not.
Section 5.3.9
Managing Multiple Spanning Tree Instances
The following sections describe how to configure and manage Multiple Spanning Tree Instances:

Siemens RUGGEDCOM ROS Specifications

General

Brand	Siemens
Model	RUGGEDCOM ROS
Category	Control Unit
Language	English